Triple-beam balance



FIG. 1 is a front, left, top, perspective view of a triple-beam balance,showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is top view of the base thereof below the pan, taken from line8—8 of FIG. 3.

The ornamental design for a triple-beam balance, as shown and described.